package com.firexxx.study.collection;

import java.util.TreeMap;

/**
 * @description: TODO
 * @author: zhuangzhang2
 * @date: 2021-02-13 14:29
 */
public class TreeMapMain {

    public static void main(String[] args) {
        TreeMap treeMap = new TreeMap();
        treeMap.put("1", "1");
        treeMap.put("9", "1");
        treeMap.put("6", "1");
        treeMap.put("2", "1");
        treeMap.put(new Object(), "1");

        Object val = treeMap.get("1");
    }

}
